Kim "Nagne" Sang-moon joined NaJin Black Sword as a sub in June 2013. His first professional games took place at the Season 3 World Championship where he played all 8 of Sword's games instead of mid laner SSONG. Nagne's play surprised many and Sword ended up losing 3-2 in a close set to eventual champions SK Telecom T1.
Once the OGN rules were changed, the Bullets merged with their sister team, the Arrows, to create KT Rolster. With Rookie's departure from the organization, Nagne filled in the starting mid lane role. KT participated in SBENU Champions Spring 2015 and placed fifth, narrowly missing playoffs. Edge was called up to the starting roster prior to the start of SBENU Champions Summer 2015 to share the starting mid lane position with Nagne. KT placed second overall during the regular season of Champions Summer. They made it to the finals of the playoffs but lost 3-0 to SK Telecom T1. KT earned enough circuit points to qualify for the 2015 Season Korea Regional Finals where they beat the Jin Air Green Wings 3-1 in the finals to qualify for the 2015 Season World Championship. KT was drawn into a group with LGD Gaming, Team SoloMid, and Origen. They ended with a 5-1 record and went on to play the KOO Tigers in the quarterfinals. Unfortunately, they lost 3-1 and were knocked out of the tournament.